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Astral lamp with shade 

1840–50

Glass, marble, brass

20 1/2 x 8 1/2 x 8 1/2 in. (52.1 x 21.6 x 21.6 cm)

The New-York Historical Society, Bequest of Mrs. F. MacDonald Sinclair (Jennie H. Sinclair), 1965.921 

Oil lamps, such as this astral lamp, burned six to ten times brighter than ordinary candles. Also known as a “sinumbra,” Latin for “without shadow,” this type of lamp, unlike earlier versions, does not cast a shadow because the reservoir is located away from the flame. Astral lamps were ideal for illuminating the parlor, because they could be placed in the center of a table and provide good reading or viewing light for everyone seated around it. The pendant crystals enhanced the effect by increasing the amount of illumination.

— Kelsey Brow